D5-brane type I superstring background fields in terms of type IIB ones by canonical method and T-duality approach

B Nikolić, B Sazdović - Nuclear Physics B, 2010 - Elsevier
We consider type IIB superstring theory with embedded D5-brane and choose boundary
conditions which preserve half of the initial supersymmetry. In the canonical approach that …

T-dualization of type II superstring theory in double space

B Nikolić, B Sazdović - The European Physical Journal C, 2017 - Springer
In this article we offer a new interpretation of the T-dualization procedure of type II
superstring theory in the double space framework. We use the ghost free action of type II …

[HTML][HTML] Fermionic T-duality in fermionic double space

B Nikolić, B Sazdović - Nuclear Physics B, 2017 - Elsevier
In this article we offer the interpretation of the fermionic T-duality of the type II superstring
theory in double space. We generalize the idea of double space doubling the fermionic …

Noncommutativity in weakly curved background by canonical methods

L Davidović, B Sazdović - Physical Review D—Particles, Fields, Gravitation …, 2011 - APS
Using the canonical method, we investigate the Dp-brane world-volume noncommutativity in
a weakly curved background. The term “weakly curved” means that, in the leading order, the …

Fermionic duality and momenta noncommutativity

B Nikolić, B Sazdović - Physical Review D—Particles, Fields, Gravitation, and …, 2011 - APS
In this article we establish the relationship between fermionic T duality and momenta
noncommutativity. This is an extension of a known relation between bosonic T duality and …

Noncommutativity relations in type IIB theory and their supersymmetry

B Nikolić, B Sazdović - Journal of High Energy Physics, 2010 - Springer
In the present paper we investigate noncommutativity of D9 and D5-brane world-volumes
embedded in space-time of type IIB superstring theory. Boundary conditions, which preserve …

Non-commutativity parameters depend not only on the effective coordinate but on its T-dual as well

L Davidović, B Sazdović - Journal of High Energy Physics, 2011 - Springer
We extend our investigations of the open string propagation in the weakly curved
background to the case when Kalb-Ramond field, beside the infinitesimal term linear in …

Dirichlet boundary conditions in type IIB superstring theory and fermionic T-duality

B Nikolić, B Sazdović - Journal of High Energy Physics, 2012 - Springer
A bstract In this article we investigate the relation between consequences of Dirichlet
boundary conditions (momenta noncommutativity and parameters of the effective theory) …

T-dual-coordinate dependence makes the effective Kalb-Ramond field nontrivial

L Davidović, B Sazdović - arxiv preprint arxiv:1105.2809, 2011 - arxiv.org
We show that the fact that the string theory is unoriented does not necessarily force the Kalb-
Ramond field to vanish. We investigated the theory of the open string propagating in the …

[PDF][PDF] T-duality and noncommutativity in type IIB superstring theory

B Nikolic, B Sazdovic - mphys6.ipb.ac.rs
In this article we investigate noncommutativity of D9-brane worldvolume embedded in space-
time of type IIB superstring theory. On the solution of boundary conditions, the initial …